Not true. A lot of times you're digging for an out if you have a bad hand, and much of the time you don't get it. It's not uncommon to draw minions when you need spells because you have nothing good in hand, just to face lethal the following turn. When Conceal was in Standard, I understand you. My go-to deck before Un'Goro was always Miracle Rogue, played it at every fireside gathering I went to, with around a 65% win rate. But I'm not a fan of the new build of the deck. It has potential, but it feels much less active to play, more like a control deck that has burst potential IF you can stay alive. If your opponent has a good hand it can be GG, but sometimes there's nothing there and it's literally play a coin or Prep and hope RNG and your remaining cards give you that chance at an out. Its effect is pretty broken, but without Conceal it's a 6 mana 4/4 half the time.